What does this simulation demonstrate about the transfer of potential energy to kinetic energy and back again within a system

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?